citations per 100 inspection hours
ⓘThis rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
50 citations across 1,122 inspection hours.
Source: MSHA inspections data, updated weekly.
Dubberly Plant has $13K in proposed MSHA penalties and $0 outstanding across 2 contested dockets.
Penalty disposition
ⓘDifferences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$13K
proposed penalties
$7K
current assessed
$7K
paid to date
$0
outstanding
48 assessments are final orders; 2 contested dockets.
Of $10K in penalties contested before the Commission, $2K was upheld in final decisions.
As of the most recent assessment on 2025-07-23.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
ⓘShares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
ⓘContesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
6citations taken to the federal commission · 12% of citations on record
Settled
5 · 83%
Vacated or withdrawn
1 · 17%
0%
S&S designation survived the contest
ⓘCounts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 5 decided S&S contests · industry: 79%
80%
Penalty reduction in decided contests
$10K proposed, $2K after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2010-04-23.
Contested penalties
ⓘA reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Health sampling
ⓘA sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.
Metal and nonmetal contaminants (personal samples)
ⓘMany samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.
Last sampled: 2025-11-18
0%
of limit-tested samples over the exposure limit
41
samples
2
limit-tested
Most sampled contaminants
Respirable dust, <.1mg39
Quartz, respirable, >1% Qtz2
Show the individual readings (41)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-11-18
Respirable dust, <.1mg
0
Dredge/Barge Operator
2025-11-18
Respirable dust, <.1mg
0
Supervisor, Co. Official
2025-02-19
Respirable dust, <.1mg
0
Scale Man
2025-02-19
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-12-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-12-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-05-17
Respirable dust, <.1mg
0
Mechanic
2023-05-17
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-05-17
Respirable dust, <.1mg
0
Front-end Loader Operator
2021-11-30
Respirable dust, <.1mg
0
Front-end Loader Operator
2021-11-30
Respirable dust, <.1mg
0
Front-end Loader Operator
2021-07-01
Respirable dust, <.1mg
0
Mechanic
2021-07-01
Respirable dust, <.1mg
0
Front-end Loader Operator
2021-07-01
Respirable dust, <.1mg
0
Front-end Loader Operator
2020-01-29
Respirable dust, <.1mg
0
Front-end Loader Operator
2020-01-29
Respirable dust, <.1mg
0
Front-end Loader Operator
2019-07-25
Respirable dust, <.1mg
0
Kiln/Dryer Operator
2019-07-25
Respirable dust, <.1mg
0
Front-end Loader Operator
2019-01-30
Respirable dust, <.1mg
0
Front-end Loader Operator
2019-01-30
Respirable dust, <.1mg
0
Kiln/Dryer Operator
2016-11-02
Respirable dust, <.1mg
0
Kiln/Dryer Operator
2016-11-02
Respirable dust, <.1mg
0
Dredge/Barge Operator
2016-11-02
Respirable dust, <.1mg
0
Mechanic
2016-11-02
Respirable dust, <.1mg
0
Mechanic
2013-02-21
Respirable dust, <.1mg
0
Mechanic
2013-02-21
Respirable dust, <.1mg
0
Ball Mill Operator
2013-02-21
Respirable dust, <.1mg
0
Front-end Loader Operator
2012-06-21
Quartz, respirable, >1% Qtz
0.19
0.37
0.51
Front-end Loader Operator
2012-06-21
Respirable dust, <.1mg
0
Front-end Loader Operator
2012-06-21
Respirable dust, <.1mg
0
Mechanic
2010-03-03
Respirable dust, <.1mg
0
Front-end Loader Operator
2010-03-03
Respirable dust, <.1mg
0
Front-end Loader Operator
2010-03-03
Respirable dust, <.1mg
0
Utility Man
2007-05-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2007-05-20
Respirable dust, <.1mg
0
Kiln/Dryer Operator
2006-03-07
Respirable dust, <.1mg
0
Utility Man
2006-03-07
Quartz, respirable, >1% Qtz
0.18
1.01
0.18
Bagging Operator
2005-07-07
Respirable dust, <.1mg
0
Front-end Loader Operator
2005-07-07
Respirable dust, <.1mg
0
Kiln/Dryer Operator
2002-06-12
Respirable dust, <.1mg
0
Mechanic
2002-06-12
Respirable dust, <.1mg
0
Lab Technician
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Dubberly Plant recorded 0.00 reportable injury cases per 100 full-time workers in 2025.
Injury rate, 2025
ⓘThis rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Louisiana, metal and nonmetal mining averaged 1.98 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year
total case rate
days-away
fatal
2025 *
0.00
0.00
0.000
2024 *
0.00
0.00
0.000
2023 *
0.00
0.00
0.000
2018 *
6.61
0.00
0.000
2017 *
0.00
0.00
0.000
2016 *
0.00
0.00
0.000
2015 *
0.00
0.00
0.000
2014 *
0.00
0.00
0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
12
2025
14
2024
14
2023
9
2022
9
2021
8
2020
8
2019
8
2018
13
2017
14
2016
14
2015
18
2014
16
2013
14
2012
15
2011
14
2010
14
2009
14
2008
15
2007
15
2006
15
2005
15
2004
15
2003
15
2002
15
2001
15
2000
15
Source: MSHA quarterly employment and production, updated weekly.
Dubberly Plant sits in Webster Parish, Louisiana, where the Census mining category is 5.6% of county employment.
Local economic context
ⓘCounty figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Webster Parish, Louisiana · Population 36,189
5.6%
Mining share of county employment
$37,396
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
ⓘCitations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2026 Q2
6,771
0
0
0.0
2026 Q1
7,659
0
0
0.0
2025 Q4
8,089
0
0
0.0
2025 Q3
9,463
1
0
105.7
2025 Q2
10,200
0
0
0.0
2025 Q1
8,934
2
0
223.9
2024 Q4
9,752
0
0
0.0
2024 Q3
9,907
0
0
0.0
Show 98 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
11,065
0
0
0.0
2024 Q1
9,151
0
0
0.0
2023 Q4
7,883
1
0
126.9
2023 Q3
4,493
0
0
0.0
2023 Q2
4,440
1
0
225.2
2023 Q1
4,049
0
0
0.0
2022 Q4
4,005
0
0
0.0
2022 Q3
4,421
0
0
0.0
2022 Q2
4,419
0
0
0.0
2022 Q1
3,977
0
0
0.0
2021 Q4
3,885
0
0
0.0
2021 Q3
4,077
0
0
0.0
2021 Q2
4,067
0
0
0.0
2021 Q1
4,253
0
0
0.0
2020 Q4
3,825
0
0
0.0
2020 Q3
4,164
0
0
0.0
2020 Q2
3,595
1
0
278.2
2020 Q1
3,996
0
0
0.0
2019 Q4
3,677
0
0
0.0
2019 Q3
3,950
0
0
0.0
2019 Q2
4,027
0
0
0.0
2019 Q1
4,635
0
0
0.0
2018 Q4
5,389
0
0
0.0
2018 Q3
7,688
0
0
0.0
2018 Q2
8,270
0
0
0.0
2018 Q1
8,906
1
0
112.3
2017 Q4
7,776
0
0
0.0
2017 Q3
8,050
0
0
0.0
2017 Q2
7,771
1
0
128.7
2017 Q1
6,671
0
0
0.0
2016 Q4
6,437
0
0
0.0
2016 Q3
7,494
0
0
0.0
2016 Q2
7,423
1
0
134.7
2016 Q1
8,442
1
0
118.5
2015 Q4
9,086
0
0
0.0
2015 Q3
8,948
1
1
111.8
2015 Q2
9,154
0
0
0.0
2015 Q1
9,746
2
0
205.2
2014 Q4
10,218
0
0
0.0
2014 Q3
8,468
1
0
118.1
2014 Q2
7,829
0
0
0.0
2014 Q1
7,860
0
0
0.0
2013 Q4
7,292
1
0
137.1
2013 Q3
7,437
0
0
0.0
2013 Q2
7,510
2
0
266.3
2013 Q1
7,528
0
0
0.0
2012 Q4
7,520
0
0
0.0
2012 Q3
7,755
0
0
0.0
2012 Q2
7,209
0
0
0.0
2012 Q1
7,574
1
0
132.0
2011 Q4
7,637
0
0
0.0
2011 Q3
7,850
0
0
0.0
2011 Q2
7,671
0
0
0.0
2011 Q1
8,123
1
0
123.1
2010 Q4
7,369
1
0
135.7
2010 Q3
7,198
0
0
0.0
2010 Q2
7,151
1
0
139.8
2010 Q1
7,309
5
0
684.1
2009 Q4
7,200
0
0
0.0
2009 Q3
8,148
0
0
0.0
2009 Q2
7,976
0
0
0.0
2009 Q1
8,731
6
2
687.2
2008 Q4
9,114
5
0
548.6
2008 Q3
9,162
0
0
0.0
2008 Q2
8,646
0
0
0.0
2008 Q1
7,980
0
0
0.0
2007 Q4
7,843
0
0
0.0
2007 Q3
8,395
0
0
0.0
2007 Q2
8,047
1
0
124.3
2007 Q1
7,524
0
0
0.0
2006 Q4
7,013
0
0
0.0
2006 Q3
7,006
0
0
0.0
2006 Q2
7,567
3
0
396.5
2006 Q1
7,984
1
0
125.3
2005 Q4
7,809
0
0
0.0
2005 Q3
8,291
0
0
0.0
2005 Q2
9,004
0
0
0.0
2005 Q1
8,885
0
0
0.0
2004 Q4
7,920
0
0
0.0
2004 Q3
7,768
0
0
0.0
2004 Q2
7,921
2
2
252.5
2004 Q1
7,884
2
0
253.7
2003 Q4
7,625
0
0
0.0
2003 Q3
7,936
0
0
0.0
2003 Q2
7,896
0
0
0.0
2003 Q1
7,520
1
0
133.0
2002 Q4
7,346
0
0
0.0
2002 Q3
7,746
0
0
0.0
2002 Q2
7,613
2
0
262.7
2002 Q1
7,418
0
0
0.0
2001 Q4
7,923
0
0
0.0
2001 Q3
7,872
0
0
0.0
2001 Q2
7,913
0
0
0.0
2001 Q1
8,042
0
0
0.0
2000 Q4
8,065
0
0
0.0
2000 Q3
7,592
0
0
0.0
2000 Q2
7,863
0
0
0.0
2000 Q1
7,842
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
15 on file
2018 · 1 incident
July 30, 2018LA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
Employee was using an angle grinder with wire wheel attachment. A wire imbedded in EE's right thigh. Doctor incision required sutures. Employee returned to work.
2006 · 1 incident
April 27, 2006LA · Metal/Non-Metalbarge/boat/dredge/towbarge/towboat/leach operator, riverman, deck handOTHER
EE WAS STANDING ON THE DECK OF THE BLUE WORK BOAT, SPOOLING OUT CABLE FROM THE BANK. HE WAS CLOSER TO THE EDGE OF THE BOAT THAT HE REALIZED. AS HE TURNED, WHILE HOLDING THE CABLE, HE SLIPPED OFF THE EDGE OF THE BOAT. AS HE WAS FALLING INTO THE WATER, HE GRABBED THE HAND RAIL WITH HIS RIGHT ARM.
ROY GREENE TRUCKING ARRIVED AT US SILICA OTHER US SILICA EE TOLD DRIVER TO PULL ON TRACK TO LOADING AREA. OTHER EE LOADED TRUCK WENT UP STAIRS FOR PAPERWORK EE WAS STARTING HIS SHIFT GOT IN T RUCK, BACKING OUT AND OTHER US SILICA EE LET TRAIN CAR GO AND IT HIT TRUCK IN REAR END CAR ARE NOT SUPPOSED TO BE RELEASE WITH TRUCK ON TRACKS.
July 29, 1997LA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
THE EE WAS CHANGING A BEARING ON A SCREW CONVEYOR. HE CUT THE RACE & WAS HITTING THE RACE WITH A HAMMER TO REMOVE THE RACE FROM THE SHAFT. A SMALL PIECE OF METAL FROM THE RACE CAME OFF & LODGE D IN HIS ARM. THE EE WAS WEARING ALL OF HIS PERSONNEL PROTECTIVE EQUIPMENT.
1989 · 1 incident
March 29, 1989LA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanPOWERED HAULAGE
THROTTLE LINKAGE CAME OFF AND ENGINE WENT TO IDLE.MACHINE WENT DOWN GRADE AT HIGH RATE OF SPEED BOUNCING OPERATOR UP AND DOWN IN THE AIR HURTING HIS BACK .EMPL DID HAVE ON SEAT BELT.
1988 · 1 incident
April 22, 1988LA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDLING OF MATERIALS
U S Silica Company · Caught in, under or between a moving and a stationary object
EMPLOYEE WAS USING A STRAIGHT PRY BAR TO CLOSE THE BOTTOM DOOR ON A RAIL CAR THE BAR SLIPPED CRUSHING HIS FINGER BETWEEN THE CAR AND THE BAR WITH THE BAR BEING STRAIGHT IT PLACES YOUR HANDS E XPREMELY CLOSE TO THE SIDE OF THE RAIL CAR
1986 · 3 incidents
July 30, 1986LA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
THE EE HAD CLIM6ED ON TOP OF THE DUST TRAILER UNIT #28 TO MOVE THE LOADING HOSE. AS HE WAS CLIMBING BACK DOWN HIS FOOT CAUGHT ON THE TOP RING OF T HE LADDER & HE FELL TO THE TRAILER FENDER & LANDED ON HIS 0OOT SPRAINING HIS ANKLE.
July 1, 1986LA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDLING OF MATERIALS
EE WAS INSTRUCT9D TO CARRY WEIGHT BILLS FOR A ROAIL CAR TO SIBLEY. THE ACCIDENT OCCURRED ON THE RETURN TRIP TO THE PLANT ON WEBSTER PARISH HIGHWAY 165 SOUTH.
1985 · 3 incidents
October 7, 1985LA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorPOWERED HAULAGE
EMPL RESTACKING3SAND ON ORE SIDE OF PAD.RAISED LOADED BUCKET TO DUMP IN RESTACK PILE WHEN BUCKET FELL.THIS CAUSED EMPL TO BE THROWN FORWARD INTO DASHBOARD WITH LEFT KNEE.
April 4, 1985LA · Metal/Non-Metalbarge/boat/dredge/towbarge/towboat/leach operator, riverman, deck handSLIP OR FALL OF PERSON
EMPL STANDING O3 PORT SIDE OF DREDGE NEAR CABIN STARTED TO TURN AROUND TO GO BACK INTO CABIN WHEN EMPL TRIPPED OVER LID OF HATCH THAT GOES DOWN INTO PONTOON.TRIED TO CATCH HIMSELF RIGHT ARM WE NT THROUGH SIDE3WINDOW OF CABIN.
March 28, 1985LA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerMACHINERY
EMPL LOADING BU5K BAGS OF SAND.SAND SOCK TIED OFF AT BOTTOM OF SOCK BUT VALVE WAS LEAKING CAUSING SOCK TO FILL WITH SAND.WHEN SOCK BECAME TOO HEAVY,IT FELL AND HIT EMPL ON BACK OF HEAD KNOCKIN H HARD HAT OFF 5ND KNOCKING HIM INTO FORKS OF FORK TRUCK.EMPL HAD LACERATIONS TO NOSE,CONTUSIONSTO LIP AND MOUTH.
1984 · 1 incident
June 20, 1984LA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
EMPL WORKING ON PORTABLE WELDING MACHINE.ENGINE WAS RUNNING IMPROPERLY.EMPL TRACING OUT HIGH IDLE WIRE.ENGINE STARTED TO QUIT AND THEREFORE,EMPL REACHED FOR THROTTLE ROD AND HAND SLIPPED INTO COOLING FAN OF ENGINE CUTTING MIDDLE FINGER OF RIGHT HAND.
1983 · 1 incident
July 29, 1983LA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
EMP WAS HOLDING THE BACK UP WRENCH ON A BOLT WHICH WAS BEING REMOVED WHEN THE BOLT BROKE LOOSE THE EMP FELL AGAINST THE METAL RAIL OF THE SCREEN IN THE MILL